Finding the Fourth Proportional to 210,699.42, 290,844.27 and 138,106.99
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Solution
The fourth proportional to 210,699.42, 290,844.27 and 138,106.99 is: 190,639.47
Step by Step Solution
- Step 1: Write the proportion equation
210,699.42 : 290,844.27 = 138,106.99 : x - Step 2: Convert to fraction form
210,699.42/290,844.27 = 138,106.99/x - Step 3: Cross multiply
210,699.42x = 290,844.27 × 138,106.99 - Step 4: Simplify right side
210,699.42x = 40,167,626,688.45 - Step 5: Solve for x
x = 40,167,626,688.45/210,699.42 - Step 6: Final answer
x = 190,639.47
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.